This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
LDL cholesterol according to Friedewald
LDL from total cholesterol, HDL and triglycerides – with the NHLBI cutoffs for children
Scientific basis
Fasting status
The Friedewald estimate of LDL requires a fasting sample (triglycerides rise postprandially). Non-HDL cholesterol is independent of this and is named by the NHLBI guideline as a screening parameter even without fasting.
Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.